20975559

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 11199801

約数列:

[1, 3, 11, 33, 37, 41, 111, 123, 407, 419, 451, 1221, 1257, 1353, 1517, 4551, 4609, 13827, 15503, 16687, 17179, 46509, 50061, 51537, 170533, 188969, 511599, 566907, 635623, 1906869, 6991853, 20975559]

約数ペア:

[(1, 20975559), (3, 6991853), (11, 1906869), (33, 635623), (37, 566907), (41, 511599), (111, 188969), (123, 170533), (407, 51537), (419, 50061), (451, 46509), (1221, 17179), (1257, 16687), (1353, 15503), (1517, 13827), (4551, 4609)]